        $(document).mousemove(function(e) {

            if

            (!!this.move) {

                var

                    posix = !document.move_target ? {
                        'x': 0,
                        'y': 0
                    } : document.move_target.posix,

                    callback = document.call_down || function() {

                        $(this.move_target).css({

                            'top': e.pageY - posix.y,

                            'left': e.pageX - posix.x

                        });

                    };



                callback.call(this,
                    e, posix);

            }

        }).mouseup(function(e) {

            if

            (!!this.move) {

                var

                    callback = document.call_up || function() {};

                callback.call(this,
                    e);

                $.extend(this, {

                    'move': false,

                    'move_target': null,

                    'call_down': false,

                    'call_up': false

                });

            }

        });